testcases/kernel/syscalls/io_cancel/io_cancel01.c

/*
 *
 *   Copyright (c) Crackerjack Project., 2007
 *   Copyright (c) 2011 Cyril Hrubis <chrubis@suse.cz>
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/* Porting from Crackerjack to LTP is done
   by Masatake YAMATO <yamato@redhat.com> */

#include "config.h"
#include "test.h"

char *TCID = "io_cancel01";

int TST_TOTAL = 1;

#ifdef HAVE_LIBAIO_H
#include <libaio.h>
#include <errno.h>
#include <string.h>

static void cleanup(void)
{
}

static void setup(void)
{
	tst_sig(NOFORK, DEF_HANDLER, cleanup);

	TEST_PAUSE;
}

/*
   DESCRIPTION
   io_cancel attempts to cancel an asynchronous I/O operation  previously
   submitted  with  the io_submit system call.  ctx_id is the AIO context
   ID of the operation to be cancelled.  If the AIO context is found, the
   event  will be cancelled and then copied into the memory pointed to by
   result without being placed into the completion queue.

   RETURN VALUE
   io_cancel returns 0 on success; otherwise, it returns one of  the  er-
   rors listed in the "Errors" section.

   ERRORS
   EINVAL The AIO context specified by ctx_id is invalid.

   EFAULT One of the data structures points to invalid data.
 */

#define EXP_RET (-EFAULT)

int main(int argc, char *argv[])
{
	int lc;
	const char *msg;

	io_context_t ctx;

	memset(&ctx, 0, sizeof(ctx));

	if ((msg = parse_opts(argc, argv, NULL, NULL)) != NULL)
		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);

	setup();

	for (lc = 0; TEST_LOOPING(lc); lc++) {
		tst_count = 0;

		TEST(io_cancel(ctx, NULL, NULL));

		switch (TEST_RETURN) {
		case 0:
			tst_resm(TFAIL, "call succeeded unexpectedly");
			break;
		case EXP_RET:
			tst_resm(TPASS, "expected failure - "
				 "returned value = %ld : %s", TEST_RETURN,
				 strerror(-TEST_RETURN));
			break;
		case -ENOSYS:
			tst_resm(TCONF, "io_cancel returned ENOSYS");
			break;
		default:
			tst_resm(TFAIL, "unexpected returned value - %s (%i) - "
				 "expected %s (%i)", strerror(-TEST_RETURN),
				 (int)TEST_RETURN, strerror(-EXP_RET), EXP_RET);
			break;
		}

	}

	cleanup();
	tst_exit();
}
#else
int main(int argc, char *argv[])
{
	tst_brkm(TCONF, NULL, "System doesn't have libaio support");
}
#endif